Hand-rope lock for elevators



June 12. 1923.

. 1,458,472 'E. L. DUNN HAND ROPE LOCK FOR ELEVATORS 'Filed Feb, 8, 1922 Patented June 12, 1923.

h g I insane PATENT OFFICE.

EDWARD L. DUNN, OF EAST ORANGE NEW JERSEY, ASSIGNOR TO OTIS ELEVATOR COMPANY, OF JERSEY- CITY, NEW JERSEY, A CORPORATION OF NEW JERSEY.

HAND-Born LOOK FOR mums.

Application filed February 8, 1922. Serial No. 534,849.

To all whom it may concern: V

Be it known that I, EDWARD L. DUNN, a citizen of the United States, residing inEast Orange, in the county of Essex andState of New Jersey, have invented a new and useful Improvement in Hand -Rope Locks for Elevators, of which the following is a specification. f

My invention relates toelev'ator-locks and discloses an improved lock for use; in the elevator practice where a shipper cable is used for operating and controlling theelevator, and where the shipper cable is provided with collars or buttons. The lock is adapted to cooperate with the collars or buttons on the shipping cable WllGIlthB elevator is in motion to cause theelevatorcar to be stopped, and topreventa person other than an authorized person to operatethe shipp ng cable to start the elevator. The object of my invention in particular is to provide an improved elevator-lock, the improvements 'ofwhich are in its design, also in its making, thatit comprises a less number of parts than other elevatorrlocks," to which end, replacements of parts dueto wear will be less frequent. I I

A, further object of the invention is to provide an easily operated lock, and that the operation of the same will be positive.

I attain these objects in thelock illustrated in the accompanying drawings in which:

Figure 1 represents an elevation view of an elevator having my improved lock. 1

Figure 2 is a side view of the lock.v

Figure 3 is a. view of the othersideof the lock. a

Figure 4: is ahplan view of. the lock in its open position. a

Figure 5 is an'end view of the lock together with a key operated hinged lock in position for preventing operating the elevatorlock.

Figure 6 is a horizontal section of thelock on the line 66, Figure 4. 1 y a Figure 7 is a horizontal section of the lock, showing the lock closed. y

Figure 8 is a vertical section of the look when closed, embodying a section of the shipper-cable and collarsor buttons fastened thereto. ,V

Similarnumerals refer to similar parts throughout the several views.

To theelevator car as shown in Figure 1, i placed in position the elevator-lock, it being fastened to one. end of a pipe, vl, the

other end of the pipe being attached to a floor'fiange, 2, the pipe and flange supporting the lock on the platform ofthe elevator car." The figure also discloses the usual shipping-cable, ,3, for operating the operating mechanism of the elevator thatlifts and lowers the elevator car. To the shipping-cable, 3, are fastened collars or buttons, 4, located at different points on the cable,

one of which buttons, 4, is adapted to be grasped bythe lock to cause the elevator car when traveling in onedirection to be stopped, and theother collar ,or button, 4:, adapted to, be grasped by thelock to cause ing' in the other direction. The engagement or either of the'collars or buttons by the lock while theelevator car is in motion will give the shipping cable, a movement the elevator car to bestopped when travelwhich .will causethe operating mechanism to ing outwardly at'its upper and lower ends, I

to admit more readily the collars orbuttons on the, shipping cable and made vertical through its center part. The housing, 5, has upper and lower lugs, 8, on its sides and opposite each other, and betweenthe lugs, 8,

are lugs, 9, of the housing, 6. Pins, 10, pro- I jected down through holes in the lugs and detachably screwed in the lower lugs, 8,.of

the housing,5, hold the housings ofthe lock together.

To admit the shipper cable, in the guide of the lock, one of the pins, 10, is removed, after which the housing,5, can be swung open and the shippercable placed within the guide. c p

Atthe rear of, and at its under side, the housing, 6, is formed somewhatcup-shape andwhich is threaded inside for the purpose of attaching the lock to a vertical'standard for mounting the lock on an elevator car, as

told hereinbefore.

The look further comprises levers, 11 and 12, which are pivoted or fulcrumed by the pin, 10, within the casing of'the lock. The fastening points,'13 and 14:, of the levers, extend out through openings in the sides of the look so that they can be anchored by the pins, 10. The casing has an opening at its front end which is a continuation of one of the side openings and also an opening at its rear end. i

To the lever, 11, is formed a handle'arin, 15, for operating both levers, 11 and 12, to open their jaw arms, 16 and 17 respectively, the handle arm, '15, extending out through the opening at the rear of the lock casing, and for closing the jaw arms of the levers a spring, 18, is provided, one end ofwhich is set in an abutment, 19, formed on one side of the housing, 6, the other end of the spring encompassing a boss, 20, formed on the lever, 12;

To operate the levers, 11 and 12, to open their jaw arms, 16 and 17 respectively, the handle arm, 15, of the lever, 11, is moved in a direction toward the observer, Figure 6. The cam projection, 21, on the lever, 11,

will move on the surface adjacent to it of the cam projection,22, of the lever, 12, as a result ofthe movement of the handle arm, 15, to the end of the adjacent surfaces of both cam projections. The cam projection, 21, will then drop into the recess, 23, on the lever, 12. With the cam projection, 21, in this position the jaw arms of the levers are locked open, so to speak, by the binding effect had of the surfaces, 24, of the 'le ver, 11, with the surface,'25, of the lever, 12. The jaw arms, 16 and 17 are now so far separated that the collars or buttons, 4, on the shipper cable, 3, may pass freely between them in the guide 7, of the lock.

To operate the levers, 11 and 12, to close their jaw arms, 16 and 17 respectively, the handle arm, 15 is moved away from the observer, to the extent of freeing the cam projection, 21, of the lever, 11, from out of I the recess, 23, on the lever, 12, after which the spring, 18, will aid the levers to close their jaw arms, or the spring will close the jaw arms by itself if the hold on the handle arm, 15, is removed. The spring, 18, will hold the jaw arms closed, and as shown in Figures 7 and 8, the jaw arms are together, or'so nearly so, that the space between them is only sufficient for the shipper cable, 3, to pass between them but less than the largest diameter of the collars or buttons, 4, on the shipper cable, 3, so that the lock will grasp one of the collars or buttons, 4 in the movement of the elevator car, and due'to the grasp give the shipper cable a movement. that will cause the operating mechanism to stop and obviously hold the elevator car as told herein'before.

For looking the jaw arms, 16 and 17 in of two housings,

their close-d position to prevent them from bein opened for preventing unauthorized starting of the elevator, a lock of the padlock type is provided. The lock as a whole is indicated by the numeral 26, in Figure 5. I have not shown its" details of construction and do not attempt to describe'the same, because this look is one of a common known type and of itself is not my invention.

The staple, 27 of the lock is passed over a lug, 28, on the lever, 11, by means of a hole, 29, in the lug, the free end of the staple is then looked within the lock, and can only be freed by a person in whose keeping is the lock key. "lhe lock, 26, being on the outside of the elevator look, its staple, 27, prevents opening of the jaw arms, 16 and 17, by means of the arm handle, 15, on the lever, 11.

What I claim as new, and desire to secure by Letters Patent of the United States is I 1. An elevator lock, comprising a holder or casing, and a pair of jaws between which the shipper cable of the elevator is adapted to be passed through, the said jaws being adapted to be moved away from and toward each other, features in the jaws for interlooking with each other'for holding the jaws open in their away-from-each-other position, and the holder or casing for arresting'their movement toward each other.

' ,2. An elevator lock comprising a pair of lever-s, one lever having a jaw arm and a cam on the jawarm, the other lever having a jaw arm and a handle arm, and a cam between the jaw arm and handle arm, said cams adapted to be operated against'each other by the handle arm for operating both jaw arms to their inoperative and operative positions. '3. An elevator lock comprising .a holder or casing, a pair of levers, one lever pivoted at one end thereto, and the other lever pivoted at the opposite end thereto, one lever having a jaw arm, the other lever having a jaw arm and a handle arm, the handle arm for operatingboth jaw arms to their inoperative and operative positions. a 4. An elevator lock, comprising acasing of separate housings, having lugs adapting the housings to be connected together, means for holding the housings togethenand a pair of jaws adapted to be pivoted in the casing by the holding means of the housings. 5. An elevator lock, comprising a casing a pair oflevers, 'eachj lever having a jaw arm, and one ,leverhaving a handle arm, and pins for holding the housings together and pivoting the levers within the casing. I 1 6. In an elevator look, a pair of levers, one lever having a jaw arm, the other lever having a jaw arm at one of its ends an'd a handle at its other end for operating both jaw arms to their operative and inoperative positions the pivot of the lever being between the handle and the jaw arm.

7. An elevator lock comprising a pair of levers one lever having a jaw arm and an other arm on one and the same side of the pivot for the lever with a cam projection thereon between the said two arms, the other lever having a jaw arm, a cam projection and a handle arm, the cam projection being between the handle and jaw arm and said cam projections adapted to coact with each other and to be moved across each others surface in moving the jaw arms to their operative and inoperative positions.

8. An elevator rope lock, comprising a casof a lock inorder to lock the jaws in their operative position. I I

9. An elevator lock comprising a casing, an operating lever with a jaw arm pivoted thereto,- and another lever with a jaw arm pivoted also thereto, and a padlock locking device occupying a position outside the lock for locking the first mentioned lever from being operated to cause the jaw arms to occupy their inoperative position.

In testimony whereof, I have signed my name to this specification.

' EDl/VARD L. DUNN. 

